1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/* SPDX-License-Identifier: LGPL-2.1-only */
/*
* Copyright (c) 2009-2013 Thomas Graf <tgraf@suug.ch>
*/
/**
* @ingroup cls
* @defgroup cls_cgroup Control Groups Classifier
*
* @{
*/
#include <netlink-private/netlink.h>
#include <netlink-private/tc.h>
#include <netlink/netlink.h>
#include <netlink/attr.h>
#include <netlink/utils.h>
#include <netlink-private/route/tc-api.h>
#include <netlink/route/classifier.h>
#include <netlink/route/cls/cgroup.h>
#include <netlink/route/cls/ematch.h>
/** @cond SKIP */
#define CGROUP_ATTR_EMATCH 0x001
/** @endcond */
static struct nla_policy cgroup_policy[TCA_CGROUP_MAX+1] = {
[TCA_CGROUP_EMATCHES] = { .type = NLA_NESTED },
};
static int cgroup_clone(void *_dst, void *_src)
{
struct rtnl_cgroup *dst = _dst, *src = _src;
dst->cg_ematch = NULL;
if (src->cg_ematch) {
dst->cg_ematch = rtnl_ematch_tree_clone(src->cg_ematch);
if (!dst->cg_ematch)
return -NLE_NOMEM;
}
return 0;
}
static void cgroup_free_data(struct rtnl_tc *tc, void *data)
{
struct rtnl_cgroup *c = data;
if (!c)
return;
rtnl_ematch_tree_free(c->cg_ematch);
}
static int cgroup_msg_parser(struct rtnl_tc *tc, void *data)
{
struct nlattr *tb[TCA_CGROUP_MAX + 1];
struct rtnl_cgroup *c = data;
int err;
err = tca_parse(tb, TCA_CGROUP_MAX, tc, cgroup_policy);
if (err < 0)
return err;
if (tb[TCA_CGROUP_EMATCHES]) {
if ((err = rtnl_ematch_parse_attr(tb[TCA_CGROUP_EMATCHES],
&c->cg_ematch)) < 0)
return err;
c->cg_mask |= CGROUP_ATTR_EMATCH;
}
#if 0
TODO:
TCA_CGROUP_ACT,
TCA_CGROUP_POLICE,
#endif
return 0;
}
static void cgroup_dump_line(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_cgroup *c = data;
if (!c)
return;
if (c->cg_mask & CGROUP_ATTR_EMATCH)
nl_dump(p, " ematch");
else
nl_dump(p, " match-all");
}
static void cgroup_dump_details(struct rtnl_tc *tc, void *data,
struct nl_dump_params *p)
{
struct rtnl_cgroup *c = data;
if (!c)
return;
if (c->cg_mask & CGROUP_ATTR_EMATCH) {
nl_dump_line(p, " ematch ");
if (c->cg_ematch)
rtnl_ematch_tree_dump(c->cg_ematch, p);
else
nl_dump(p, "<no tree>");
} else
nl_dump(p, "no options");
}
static int cgroup_fill_msg(struct rtnl_tc *tc, void *data,
struct nl_msg *msg)
{
struct rtnl_cgroup *c = data;
if (!c)
BUG();
if (!(tc->ce_mask & TCA_ATTR_HANDLE))
return -NLE_MISSING_ATTR;
if (c->cg_mask & CGROUP_ATTR_EMATCH)
return rtnl_ematch_fill_attr(msg, TCA_CGROUP_EMATCHES,
c->cg_ematch);
return 0;
}
/**
* @name Attribute Modifications
* @{
*/
void rtnl_cgroup_set_ematch(struct rtnl_cls *cls, struct rtnl_ematch_tree *tree)
{
struct rtnl_cgroup *c;
if (!(c = rtnl_tc_data(TC_CAST(cls))))
BUG();
if (c->cg_ematch) {
rtnl_ematch_tree_free(c->cg_ematch);
c->cg_mask &= ~CGROUP_ATTR_EMATCH;
}
c->cg_ematch = tree;
if (tree)
c->cg_mask |= CGROUP_ATTR_EMATCH;
}
struct rtnl_ematch_tree *rtnl_cgroup_get_ematch(struct rtnl_cls *cls)
{
struct rtnl_cgroup *c;
if (!(c = rtnl_tc_data(TC_CAST(cls))))
BUG();
return c->cg_ematch;
}
/** @} */
static struct rtnl_tc_ops cgroup_ops = {
.to_kind = "cgroup",
.to_type = RTNL_TC_TYPE_CLS,
.to_size = sizeof(struct rtnl_cgroup),
.to_clone = cgroup_clone,
.to_msg_parser = cgroup_msg_parser,
.to_free_data = cgroup_free_data,
.to_msg_fill = cgroup_fill_msg,
.to_dump = {
[NL_DUMP_LINE] = cgroup_dump_line,
[NL_DUMP_DETAILS] = cgroup_dump_details,
},
};
static void __init cgroup_init(void)
{
rtnl_tc_register(&cgroup_ops);
}
static void __exit cgroup_exit(void)
{
rtnl_tc_unregister(&cgroup_ops);
}
/** @} */
|
